How can you get cars to slow down in areas where there can be a lot of pedestrian traffic?
A depressingly common solution to that problem involves installing the unpopular and costly trappings of the modern surveillance state, where sensor-laden intersection safety systems have been installed to "enhance" pedestrian safety and, more often than not, to enhance the revenue collections of the local jurisdictions that install them at a cost of tens of thousands for each pedestrian walkway where they might place them.
Or worse, by the low-tech solution of installing speed bumps at a cost of several thousand each, which are proving to turn out to not be good for the condition of vehicle suspensions, people's health or even the environment.
What if the same improvements in pedestrian safety can be achieved for just a few hundred dollars for a new and creatively applied coat of paint for the pedestrian walkways? At least, that's the intriguing potential being suggested from the experience of Ísafjörður, Iceland, which used optical illusions painted on the roadway to get local drivers to slow down as they approached pedestrian crossings.
There's nothing wrong with low-tech and low-cost when it's done right!